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Chapter 4: Network Security Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass
Application programming interface (API) - Answer✔A set of routines, standards, protocols, and
tools for building software applications to access a web-based software application or web tool.
Bit - Answer✔The most essential representation of data (zero or one) at Layer 1 of the Open
Systems Interconnection (OSI) model.
Broadcast - Answer✔Broadcast transmission is a one-to-many (one-to-everyone) form of
sending internet traffic.
Byte - Answer✔The byte is a unit of digital information that most commonly consists of eight
bits.
Cloud computing - Answer✔A model for enabling ubiquitous, convenient, on-demand network
access to a shared pool of configurable computing resources (e.g., networks, servers, storage,
applications, and services) that can be rapidly provisioned and released with minimal
management effort or service provider interaction. NIST 800-145
Community cloud - Answer✔A system in which the cloud infrastructure is provisioned for
exclusive use by a specific community of consumers from organizations that have shared
concerns (e.g., mission, security requirements, policy and compliance considerations). It may be
owned, managed and operated by one or more of the organizations in the community, a third
party or some combination of them, and it may exist on or off premises. NIST 800-145
1
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De-encapsulation - Answer✔The opposite process of encapsulation, in which bundles of data
are unpacked or revealed.
Denial-of-Service (DoS) - Answer✔The prevention of authorized access to resources or the
delaying of time-critical operations. (Time-critical may be milliseconds or it may be hours,
depending upon the service provided.) Source: NIST SP 800-27 Rev A
Domain Name Service (DNS) - Answer✔This acronym can be applied to three interrelated
elements: a service, a physical server and a network protocol.
Encapsulation - Answer✔Enforcement of data hiding and code hiding during all phases of
software development and operational use. Bundling together data and methods is the process
of encapsulation; its opposite process may be called unpacking, revealing, or using other terms.
Also used to refer to taking any set of data and packaging it or hiding it in another data
structure, as is common in network protocols and encryption.
Encryption - Answer✔The process and act of converting the message from its plaintext to
ciphertext. Sometimes it is also referred to as enciphering. The two terms are sometimes used
interchangeably in literature and have similar meanings.
File Transfer Protocol (FTP) - Answer✔The internet protocol (and program) used to transfer files
between hosts.
Fragment attack - Answer✔In a fragment attack, an attacker fragments traffic in such a way
that a system is unable to put data packets back together.
Hardware - Answer✔The physical parts of a computer and related devices.
2
Chapter 4: Network Security Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass
Application programming interface (API) - Answer✔A set of routines, standards, protocols, and
tools for building software applications to access a web-based software application or web tool.
Bit - Answer✔The most essential representation of data (zero or one) at Layer 1 of the Open
Systems Interconnection (OSI) model.
Broadcast - Answer✔Broadcast transmission is a one-to-many (one-to-everyone) form of
sending internet traffic.
Byte - Answer✔The byte is a unit of digital information that most commonly consists of eight
bits.
Cloud computing - Answer✔A model for enabling ubiquitous, convenient, on-demand network
access to a shared pool of configurable computing resources (e.g., networks, servers, storage,
applications, and services) that can be rapidly provisioned and released with minimal
management effort or service provider interaction. NIST 800-145
Community cloud - Answer✔A system in which the cloud infrastructure is provisioned for
exclusive use by a specific community of consumers from organizations that have shared
concerns (e.g., mission, security requirements, policy and compliance considerations). It may be
owned, managed and operated by one or more of the organizations in the community, a third
party or some combination of them, and it may exist on or off premises. NIST 800-145
1
, ©THESTAR 2025 ALL RIGHTS RESERVED 2:58 PM A+
De-encapsulation - Answer✔The opposite process of encapsulation, in which bundles of data
are unpacked or revealed.
Denial-of-Service (DoS) - Answer✔The prevention of authorized access to resources or the
delaying of time-critical operations. (Time-critical may be milliseconds or it may be hours,
depending upon the service provided.) Source: NIST SP 800-27 Rev A
Domain Name Service (DNS) - Answer✔This acronym can be applied to three interrelated
elements: a service, a physical server and a network protocol.
Encapsulation - Answer✔Enforcement of data hiding and code hiding during all phases of
software development and operational use. Bundling together data and methods is the process
of encapsulation; its opposite process may be called unpacking, revealing, or using other terms.
Also used to refer to taking any set of data and packaging it or hiding it in another data
structure, as is common in network protocols and encryption.
Encryption - Answer✔The process and act of converting the message from its plaintext to
ciphertext. Sometimes it is also referred to as enciphering. The two terms are sometimes used
interchangeably in literature and have similar meanings.
File Transfer Protocol (FTP) - Answer✔The internet protocol (and program) used to transfer files
between hosts.
Fragment attack - Answer✔In a fragment attack, an attacker fragments traffic in such a way
that a system is unable to put data packets back together.
Hardware - Answer✔The physical parts of a computer and related devices.
2
